Storm Station
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Beside a road

RWIS network, identified by the register

Identifier
CF006
Latitude
35.12539 N
Longitude
118.41069 W
Elevation
4,071 ft
Rank
2,485of 4,465 in California, Oct 16
Observed
9:00 PMPDT, 29 minutes ago
Air temperature
68.5F
Dew point
24.7F
Relative humidity
19%
Wind
9mph
Gust
13mph
Wind direction
75°

Ranking Statistics

On the radar over SR-58 - Tehachapi SummitReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

Beside a road

Drawn as the kind of place it stands at. 136 instruments in California stand at one.

Station charts

SR-58 - Tehachapi Summit Report

Rank 2,485 of 4,465 in California, Oct 16. The 247 rank orders a state's stations by their 247 score out of 100: how reliably they report, how accurate their readings are against a reference station, how their readings pass their checks, and how they stand against the forecast.

Ranking Statistics

247 score90.0of 100

California median
91.6the median score of 4,465 stations
Scoring higher
2,479stations in California
Sharing its score
8ranks 2,480 to 2,487
Points deducted
10.03.5 continuity, 2.8 reports received, 1.9 arrival, 1.1 accuracy, 0.8 forecast check
Counted at the median
Forecast checknot measured at this station; California median 92.4
Next above
LSRC1rank 2,484; ahead on reports received 92.1% against 91.9%
Next below
CD006rank 2,486; behind on reports received 91.9% against 87.1%

Equal scores are ordered by the share of scheduled reports received, then the reports due in the week (the longer record first), then the median arrival, then the longest silence.

  1. Reports receivedweight 3592.032.2 of 35 pointsCalifornia median 98.5618 of 672 scheduled reports received in 7 days
  2. Arrivalweight 1081.58.2 of 10 pointsCalifornia median 81.2half its reports arrived within 19 min
  3. Continuityweight 1065.46.5 of 10 pointsCalifornia median 100.0longest silence 2.3 h, on a schedule of one report every 15 min
  4. Accuracyweight 2094.418.9 of 20 pointsCalifornia median 85.6its temperature against the airport station KTSP, 2.0 miles away, over 566 readings: typical difference 2.1 °F beyond a steady offset of +0.7 °F
  5. Instrument checksweight 15100.015.0 of 15 pointsCalifornia median 100.00 of 566 readings failed their check against its reference station
  6. Forecast checkweight 10-9.2 of 10 points, at the medianCalifornia median 92.4-

The score is the weighted mean of its six parts, from the last 7 days. How a station is ranked sets out each part.

How each part is scored
Reports received
Full marks for every scheduled report received, none for none, in proportion between
Arrival
Full marks for a median arrival within 10 min, none at 60 min
Continuity
Full marks for a longest silence of 3 reports or less (45 min), none for 72 (18 h)
Accuracy
Full marks within 1.7 °F of its reference, typically, none beyond 8.2 °F
Instrument checks
Full marks for no reading failed, none for 5 per cent or more
Forecast check
Full marks within 2 °F of the forecast on average, none at 8 °F
Rank
2,485of 4,465 in California, Oct 16
Days reported, 30 days
0 of 30
Time to reach Storm Station
19 min9 in 10 within 20 min
Against its reference, 30 days
+1.1 °Fwarmer than the airport station KTSP, 2.0 miles away, on average over 1,060 readings; typical difference 2.5 °F

The reports received are counted from the network's own archive of this station's reports. Its 247 rank is counted from Storm Station's own record, which holds less than 7 days of it so far: 618 of 672 scheduled reports received, 91.9%.

Against its reference: each temperature this station reports is compared with the nearest airport or climate reference station that reported within half an hour, up to 15 miles away. The figure is its reading less the reference's, on average, as both were reported; the typical difference is the root mean square. The difference in height is shown where both heights are known.

Chart of the 4,465 ranked stations in California on Oct 16 by the share of their scheduled reports received in Storm Station's own record, up to 7 days, in tenths: 0 to 9 per cent, 78; 10 to 19 per cent, 83; 20 to 29 per cent, 45; 30 to 39 per cent, 22; 40 to 49 per cent, 118; 50 to 59 per cent, 285; 60 to 69 per cent, 120; 70 to 79 per cent, 209; 80 to 89 per cent, 391; 90 to 99 per cent, 2,034; 100 per cent, 1,080. SR-58 - Tehachapi Summit received 91.9 per cent, 618 of 672 scheduled reports, rank 2,485 of 4,465.WHERE IT RANKS IN CALIFORNIA, Oct 16THIS ONE: 91.9%, 618 OF 672, RANK 2,485 OF 4,465PER CENT OF SCHEDULED REPORTS RECEIVEDIN STORM STATION'S OWN RECORD, UP TO 7 DAYS1101001,0000 to 97810 to 198320 to 294530 to 392240 to 4911850 to 5928560 to 6912070 to 7920980 to 8939190 to 992,0341001,080STATIONS, LOG SCALE
Chart of SR-58 - Tehachapi Summit's rank in California by how it reported, day by day, from 2026-10-04 to 2026-10-16: 2026-10-04 rank 3,939 of 4,072; 2026-10-05 rank 4,096 of 4,333; 2026-10-06 rank 4,050 of 4,362; 2026-10-07 rank 3,940 of 4,381; 2026-10-08 rank 3,780 of 4,405; 2026-10-09 rank 2,804 of 4,400; 2026-10-10 rank 2,805 of 4,400; 2026-10-11 rank 2,827 of 4,428; 2026-10-12 rank 2,750 of 4,446; 2026-10-13 rank 2,724 of 4,464; 2026-10-14 rank 2,764 of 4,466; 2026-10-15 rank 2,494 of 4,462; 2026-10-16 rank 2,485 of 4,465.ITS RANK IN CALIFORNIA, DAY BY DAYRANK, FIRST AT THE TOP12,0004,0006,000Oct 4Oct 7Oct 10Oct 13Oct 16
The ranking these charts were drawn from, as tables
Share of scheduled reports receivedStations
100%1,080
90 to 99%2,034
80 to 89%391
70 to 79%209
60 to 69%120
50 to 59%285
40 to 49%118
30 to 39%22
20 to 29%45
10 to 19%83
0 to 9%78
DayRankStations rankedShare received
Oct 16, 20262,4854,46591.9%
Oct 15, 20262,4944,46292.1%
Oct 14, 20262,7644,46690.3%
Oct 13, 20262,7244,46490.6%
Oct 12, 20262,7504,44689.7%
Oct 11, 20262,8274,42890.0%
Oct 10, 20262,8054,40089.2%
Oct 9, 20262,8044,40088.8%
Oct 8, 20263,7804,40562.6%
Oct 7, 20263,9404,38151.1%
Oct 6, 20264,0504,36237.7%
Oct 5, 20264,0964,33324.7%
Oct 4, 20263,9394,07211.3%

Station report

SR-58 - Tehachapi Summit, in 3 sheets

Drawn from the register, in the manner of the Field Book, and opened beside the plates that explain each part of it.

1The column

Contents

At 4,071 ft above sea level, 14 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 25.77 inHg and the temperature at 44.5 F.

Section from sea level of where SR-58 - Tehachapi Summit stands in the atmosphere, height to scale: the station 4,071 feet above sea level with 14 per cent of the air below it; the standard atmosphere's pressure there, 25.77 inches of mercury, and temperature, 44.5 degrees Fahrenheit.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CF006FIG. D WHERE SR-58 - TEHACHAPI SUMMIT STANDS IN THE ATMOSPHERESECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHEREFT ABOVE SEA LEVEL05,00010,00015,000SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHERESR-58 - TEHACHAPI SUMMIT14 PER CENT OF THE AIR BELOW IT4,071 FT10 PER CENT OF THE AIR BELOW, 2,890 FT20 PER CENT OF THE AIR BELOW, 6,050 FT30 PER CENT OF THE AIR BELOW, 9,540 FT40 PER CENT OF THE AIR BELOW, 13,470 FTSTANDARD PRESSURE HERE25.77 inHgSTANDARD TEMPERATURE HERE44.5 FTITLESR-58 - Tehachapi Summit, the columnSTATION REPORT · RWIS CF006TYPESECTIONSCALEHEIGHT TO SCALEREVFROM THE REGISTER SHEET 1 of 3DATE2026-10-16IDSR-CF006-1DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

From the Field Book

2The sun

Contents

On Oct 16 the noon sun stands 46 degrees above the horizon at 35.13 N, and the day is 11 h 08 min long. Level ground there takes 72 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at SR-58 - Tehachapi Summit, angles true: on Oct 16 it stands 46 degrees above the horizon, against 78 at the June solstice, 55 at the equinoxes and 31 at the December solstice; the day is 11 h 08 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CF006FIG. E THE SUN AT SR-58 - TEHACHAPI SUMMITELEVATION LOOKING WEST, SOUTH TO THE LEFT: THE NOON SUN ON THE DAY OF THE REPORT, AND AT THE SOLSTICES AND EQUINOXES; ANGLES TRUETHE STATIONJUNE SOLSTICE 78°EQUINOXES 55°DECEMBER SOLSTICE 31°OCT 16, 46°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 11 H 08 MINLEVEL GROUND TAKES 72 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 35.13 N; THE SUN'S DECLINATION -9.1°TITLESR-58 - Tehachapi Summit, the sunSTATION REPORT · RWIS CF006TYPEELEVATIONSCALEANGLES TRUEREVFROM THE REGISTER SHEET 2 of 3DATE2026-10-16IDSR-CF006-2DRAWN AS linework on paperSOURCES FB-ENG-007

From the Field Book

3The instrument

Contents

A road weather station, 4,071 ft above sea level. Its sensors, as its network builds them.

Elevation of a road weather station, SR-58 - Tehachapi Summit, each sensor drawn and labelled with what it read: no reading in the last day.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CF006FIG. F THE INSTRUMENTELEVATION OF A ROAD WEATHER STATION, EACH SENSOR WITH WHAT IT READTHE ROAD, IN SECTIONPAVEMENT SENSOR, SET IN THE ROAD-PROBE UNDER THE ROAD-AIR TEMPERATURE ON THE TOWER-WIND AT THE TOP OF THE TOWER-SCHEMATIC; THE SPACING BETWEEN SENSORS IS NOT TO SCALETITLESR-58 - Tehachapi Summit, the instrumentSTATION REPORT · RWIS CF006TYPEELEVATIONSCALESCHEMATICREVFROM THE REGISTER SHEET 3 of 3DATE2026-10-16IDSR-CF006-3DRAWN AS linework on paperSOURCES FB-INS-001

From the Field Book

The instrumentWhat an instrument is FB-INS-001Stevenson screen and siting FB-INS-009

What it seesLapse rates and stability FB-ENG-005Water vapour as a gas FB-ENG-011Blizzard FB-EVT-081Ice storm FB-EVT-084Heat wave and heat dome FB-EVT-130Fire weather FB-EVT-139High wind FB-EVT-150Humidity variables FB-WAT-002Fog types FB-WAT-020

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